package/gdal: fix json dependency

gdal needs json-c, not libjson, resulting in the following build failure
since the addition of the package in commit
1e64fa29:

configure: error: could not find json-c/json.h

While at it, also drop unrecognized options:

configure: WARNING: unrecognized options: --disable-gtk-doc, --disable-gtk-doc-html, --disable-doc, --disable-docs, --disable-documentation, --with-xmlto, --with-fop, --disable-dependency-tracking, --enable-ipv6, --disable-nls, --without-dods-root, --without-fme, --without-grass, --without-libgrass, --without-ingres, --without-jasper, --without-charls, --without-mdb, --without-mongocxx, --without-mrsid_lidar, --without-perl

Fixes:
 - http://autobuild.buildroot.org/results/f977675125167806e844a176a4c8c8873557b709



Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>